EP 3581989 A1 20191218 - LENS, LENS BLANK, AND EYEWEAR
Title (en)
LENS, LENS BLANK, AND EYEWEAR
Title (de)
LINSE, LINSENROHLING UND BRILLE
Title (fr)
VERRE, ÉBAUCHE DE VERRE ET LUNETTES
Publication
Application
Priority
- JP 2017020635 A 20170207
- JP 2017036126 W 20171004
Abstract (en)
Provided is a lens for eyewear. The lens comprises: a first transparent substrate that includes a diffraction region in which a plurality of convex strips and groove sections are formed in alternation in concentric circles; a second transparent substrate that faces the first transparent substrate in a prescribed direction; a liquid crystal layer disposed in a space present between the diffraction region and the second transparent substrate; and a first transparent electrode and a second transparent electrode that impress a voltage on the liquid crystal layer. The diffraction region comprises a first diffraction region and a second diffraction region that is disposed in at least part of a portion different from the first diffraction region. The space comprises: groove-shaped spaces present between the groove sections and the second transparent substrate; and a communicating space disposed between at least part of the convex shapes of the second diffraction region and the second transparent substrate, and communicating between neighboring groove-shaped spaces. Due to this configuration, a lens for eyewear is provided in which a liquid crystal material can be suitably disposed between a first transparent substrate and a second transparent substrate.
IPC 8 full level
G02C 7/00 (2006.01); G02B 3/08 (2006.01); G02B 3/14 (2006.01); G02B 5/18 (2006.01)
CPC (source: CN EP US)
G02C 7/00 (2013.01 - EP); G02C 7/02 (2013.01 - CN); G02C 7/061 (2013.01 - EP); G02C 7/083 (2013.01 - EP); G02C 7/101 (2013.01 - CN); G02F 1/13306 (2013.01 - EP); G02F 1/1333 (2013.01 - CN); G02F 1/133504 (2013.01 - US); G02F 1/1339 (2013.01 - US); G02F 1/134309 (2013.01 - CN); G02F 1/13439 (2013.01 - US); G02F 1/29 (2013.01 - EP); G02C 7/083 (2013.01 - US); G02C 2202/20 (2013.01 - EP US); G02F 1/133371 (2013.01 - EP); G02F 1/294 (2021.01 - EP); G02F 2201/305 (2013.01 - US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3581989 A1 20191218; EP 3581989 A4 20201230; CN 110291445 A 20190927; CN 110291445 B 20210319; CN 113031305 A 20210625; CN 113031305 B 20230421; JP 2020197735 A 20201210; JP 6746724 B2 20200826; JP 7073455 B2 20220523; JP WO2018146858 A1 20191107; US 10859865 B2 20201208; US 11314119 B2 20220426; US 2020004049 A1 20200102; US 2021055602 A1 20210225; WO 2018146858 A1 20180816
DOCDB simple family (application)
EP 17895725 A 20171004; CN 201780085119 A 20171004; CN 202110218812 A 20171004; JP 2017036126 W 20171004; JP 2018566747 A 20171004; JP 2020132994 A 20200805; US 201716484145 A 20171004; US 202017090995 A 20201106